package com.sky.service.impl;

import com.github.pagehelper.Page;
import com.github.pagehelper.PageHelper;
import com.sky.constant.MessageConstant;
import com.sky.constant.StatusConstant;
import com.sky.context.BaseContext;
import com.sky.dto.EmployeeDTO;
import com.sky.dto.EmployeeLoginDTO;
import com.sky.dto.EmployeePageQueryDTO;
import com.sky.dto.PasswordEditDTO;
import com.sky.entity.Employee;
import com.sky.exception.AccountLockedException;
import com.sky.exception.AccountNotFoundException;
import com.sky.exception.BaseException;
import com.sky.exception.PasswordErrorException;
import com.sky.mapper.EmployeeMapper;
import com.sky.result.PageResult;
import com.sky.service.EmployeeService;
import org.openxmlformats.schemas.drawingml.x2006.main.STLineEndWidth;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.util.DigestUtils;

import java.nio.charset.StandardCharsets;
import java.time.LocalDateTime;

@Service
public class EmployeeServiceImpl implements EmployeeService {

    @Autowired
    private EmployeeMapper employeeMapper;

    /**
     * 员工登录
     *
     * @param employeeLoginDTO
     * @return
     */
    public Employee login(EmployeeLoginDTO employeeLoginDTO) {
        String username = employeeLoginDTO.getUsername();
        String password = employeeLoginDTO.getPassword();

        //1、根据用户名查询数据库中的数据
        Employee employee = employeeMapper.getByUsername(username);

        //2、处理各种异常情况（用户名不存在、密码不对、账号被锁定）
        if (employee == null) {
            //账号不存在
            throw new AccountNotFoundException(MessageConstant.ACCOUNT_NOT_FOUND);
        }

        //密码比对
        // TODO 后期需要进行md5加密，然后再进行比对
        password = DigestUtils.md5DigestAsHex(password.getBytes(StandardCharsets.UTF_8));
        if (!password.equals(employee.getPassword())) {
            //密码错误
            throw new PasswordErrorException(MessageConstant.PASSWORD_ERROR);
        }

        if (employee.getStatus() == StatusConstant.DISABLE) {
            //账号被锁定
            throw new AccountLockedException(MessageConstant.ACCOUNT_LOCKED);
        }

        //3、返回实体对象
        return employee;
    }

    //分页条件查询
    @Override
    public PageResult pageList(EmployeePageQueryDTO employeePageQueryDTO) {
        PageHelper.startPage(employeePageQueryDTO.getPage(), employeePageQueryDTO.getPageSize());
        Page page = (Page) employeeMapper.pageList(employeePageQueryDTO.getName());
        PageResult pageResult = new PageResult();
        pageResult.setTotal(page.getTotal());
        pageResult.setRecords(page.getResult());
        return pageResult;
    }

    @Override
    public void insert(EmployeeDTO employeeDTO) {
        Employee employee = new Employee();
        BeanUtils.copyProperties(employeeDTO, employee);
//        employee.setPassword(BcriptUtils.createPassword("123456"));
        employee.setPassword(DigestUtils.md5DigestAsHex("123456".getBytes(StandardCharsets.UTF_8)));
        employee.setStatus(StatusConstant.ENABLE);
//        employee.setUpdateTime(LocalDateTime.now());
//        employee.setCreateTime(LocalDateTime.now());
//        //从线程里获取登陆信息里的id
//        employee.setCreateUser(BaseContext.getCurrentId());
//        employee.setUpdateUser(BaseContext.getCurrentId());
        employeeMapper.insert(employee);
        //销毁线程
        BaseContext.removeCurrentId();
    }

    @Override
    public void status(Integer status, Long id) {
        Employee employee = new Employee();
        employee.setId(id);
        employee.setStatus(status);
//        employee.setUpdateTime(LocalDateTime.now());
        employeeMapper.status(employee);
    }

    @Override
    public Employee getByid(Integer id) {
        Employee employee = employeeMapper.getByid(id);
        return employee;
    }

    @Override
    public void update(EmployeeDTO employeeDTO) {
        Employee employee = new Employee();
//        employee.setUpdateTime(LocalDateTime.now());
//        employee.setUpdateUser(BaseContext.getCurrentId());
        BeanUtils.copyProperties(employeeDTO, employee);
        employeeMapper.status(employee);
        BaseContext.removeCurrentId();
    }

    @Override
    public void upPassword(PasswordEditDTO passwordEditDTO) {
        //获取线程里的用户id
        Long currentId = BaseContext.getCurrentId();
        //根据获取到的当前线程对象id去查询数据库
        Employee byid = employeeMapper.getPassword(currentId);
        //将前段传来的密码进行加密
        String OldPassword = DigestUtils.md5DigestAsHex(passwordEditDTO.getOldPassword().getBytes());
        //将加密的密码和原密码进行对比
        if (!OldPassword.equals(byid.getPassword())) {
            throw new BaseException(MessageConstant.PASSWORD_ERROR);
        }
        //如果输入的密码加密后与原密码相同责修改密码

        byid.setPassword(DigestUtils.md5DigestAsHex(passwordEditDTO.getOldPassword().getBytes()));
        byid.setId(currentId);
        byid.setUpdateTime(LocalDateTime.now());
        byid.setUpdateUser(currentId);
        BeanUtils.copyProperties(passwordEditDTO, byid);
        employeeMapper.status(byid);
        BaseContext.removeCurrentId();
    }

}

